I don't know much about belt alignment or anything. I'm getting rubber dust on the top of my vortech ysi v7 (self installed, no shops nearby.) It's dusting right after the tensioner near the supercharger pulley. What do I need to adjust?

I have the V3 so it's a little different. But when I pulleyed down I changed the location of the tensioner and routed the belt under the idler. It gives a little more belt wrap around the blower pully. Vortech allready had the holes in the brackets. I picked up a bold from Fastenal the odd thing is the bolts going into the Vortech brackets are metric and the bolts going in to the blower are standerd. I am at work so I do not have a pic to post righ now.

I didn't know he had a different routing. Haven't gotten the upgrade from him yet. It goes from crank to s/c with the tensioner on it top side 3/4 from the left and the idler bottom side 1/4 from the left.

Generally speaking, if you aren't beyond frustrated while putting the belt on, it isn't tight enough. I'd see if you can't get a buddy to help you get the tensioner set a little tighter. Also remember, belts stretch and will need to be adjusted after 100 miles or so.